Device for repair of defects in a structure

A device for repairing defects in an internal layer of a structure, wherein the said device includes:

• a cylindrical body rotating around its axial direction,
• a movement converter held in the said cylindrical body, said movement converter being constrained to rotate with the cylindrical body, and assembled such that said movement converter is able to move in the axial direction,
• a configuration part able to cause and to configure the displacement of said movement converter in an axial translational movement,
• a cutting element coupled with the said cylindrical body and with said movement converter such that the cutting element may be made to rotate by the cylindrical body, and may be made to move with a radial displacement by the movement converter between a folded position and a deployed position through an opening defined in said cylindrical body to machine the internal layer with a cut which depends on the displacement of said movement converter according to an axial translational movement, said cutting element being enclosed in said cylindrical body in said folded position.